2019独角兽企业重金招聘Python工程师标准>>> 
#include<iostream>
#include<fstream>
#include<string>
#include<iterator>
#include<cstdlib>
using namespace std;
ofstream & openFile(ofstream &out,const string &fileName)
{
out.close();
out.clear();
out.open(fileName.c_str());
return out;
}
ifstream & openFile(ifstream &in,const string &fileName)
{
in.close();
in.clear();
in.open(fileName.c_str());
return in;
}
int main()
{
cout<<"Enter two file name:"<<endl;
string filename1,filename2;
cin>>filename1>>filename2;
ofstream outfile1,outfile2;
openFile(outfile1,filename1);
openFile(outfile2,filename2);
cout<<"Enter some integers:"<<endl;
istream_iterator<int> input(cin),eof;
ostream_iterator<int> output1(outfile1," ");
ostream_iterator<int> output2(outfile2,"\n");
while(input!=eof)
{
if(*input%2)
*output1++=*input++;
else
*output2++=*input++;
}
outfile1.close();
outfile2.close(); //close file
cout<<"odd number contains:"<<endl;
ifstream infile;
openFile(infile,filename1);
istream_iterator<int> in(infile),end_of_stream;
ostream_iterator<int> out(cout," ");
while(in!=end_of_stream)
*out++=*in++;
cout<<endl;
return 0;
}